Question

look at this graph: what is the equation of the axis of symmetry?

Explanation:

Step1: Identify vertex of parabola

The vertex of the parabola is the lowest - point on the graph. From the graph, the vertex has an x - coordinate of 3.

Step2: Recall axis - of - symmetry formula

For a parabola, the equation of the axis of symmetry is $x =$ the x - coordinate of the vertex.

Answer:

$x = 3$